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In order to determine the properties ofa dense gas at high pressures, 10 lbm of the gas was heated at 4000 psia from 700 to 740°F. The gas volumes were 0.287 and 0.328 ft^3 in the initial and final states, respectively, and the required energy transfer as heat to the gas was 537 Btu. Determine the difference in the specific internal energy between the initial and final states.
the piston has a mass of 4kg and cross-sectional area of 35cm^2. A compressed spring above the piston exerts a force of 60N on the piston. if the atmospheric pressure is 95kPa, determine the pressure inside the cylinder.
steam is the working fluid in an ideal reheat rankine cycle. steam enters the first-stage turbine at 8.0 mpa 480oc and
a 4 l volume of pressure cooker in a kitchen operates at 200 kpa with an exit area of 10 mm2. with well controlled heat
a pressure transducer behaves as a second-order system. if the undamped natural frequency is 10 khz and the damping is
suppose that 1 kg of saturated water vapor at 100ordmc is condensed to a saturated liquid at 100ordmc in a
a well insulated thin-walled double-pipe counter-flow heat exchanger is to be used to cool oil cp 2.20 kjkg c from 150
a hot water stream at 80o c enters a mixing chamber with a mass flow of 0.5 kgs where it is mixed with a stream of cold
a 2.75 m3 rigid tank initially contains air at 104 kpa and 22 degrees c. the tank is connected to a supply line through
a venture necked-down section in a pipe develops a low pressure that can aspire fluid upward from a reservoir. derive
It is claimed that a refrigerator requiring 400 W of power (W) receives heat from cold storage (low temperature source, TL) at 200 K and rejects heat at the rate of 600 W (QH) to an environment at 600 K (high temperature reservoir, TH). Calculate the..
A piston-cylinder device initially contains 0.15-kg steam at 3.5 MPa, superheated by 5C. Now the steam loses heat to the surroundings and the piston moves down, hitting a set of stops at which point the cylinder contains saturated liquid water. The c..
a corroded metal plate was found in a submerged ocean vessel. the original dimensions of the plate were 25 x 10 x 5 cm.
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